Improvement in children s building-blocks



UNITED STATES PATENT OEE'IoE.

CHARLES M. ORANDALL, OF MONTROSE, PENNSYLVANIA.

IMPROVEMENT IN CHILDRENS BUILDING-BLOCKS.

Specification forming part of Letters Patent No. 61,721, dated February 5, 1867.

To all 'whom 'itrmay concern.-

Be it known that I, CHARLES M. CEANDALL,

of Montrose, in the county of Susquehanna' and State of Pennsylvania, haveinvented a new A indenting the blocks, which may be of anyV shape, size, or material, by tonguing and grooving or other similar process, that the indented parts of earl; block will closely lit into the indented part,J of any of the other blocks, forming a substantial fastening or joint, flexible in two directions, easily put together and removed at the will of the operator.

'.lo enable others skilled in the art to make and use my invention, I will proceed to ndescribe the -blocks and the manner in which they may be put together.

I construct the blocks A B C D E F Gr H I J as shown in theLLanneXed drawings, having first chosen some Lconvenient size, by indenting one or more of their surfaces, after the manner of tonguing and grooving alternately, with any tool capable of making a groove or tongue.

The-indentations may be of any convenient size, depth, or width, at the pleasure of the maker; and when placed together, the tongue of one in the groove of the other, substantial structures may be made, such as houses, arches, bridges, tents, boxes, &c., and if care is used in breaking joints, the various structures are so compact and substantial as to be easily moved without deranging their form or falling to pieces. The number of diii'erent kinds of structures which may be made of them is only limited by the ingenuity of the builder.

To still further illustrate their construction and the manner of using them, I refer to the annexed drawing, where- Figure l represents a front elevation of a childrens play-house made of these blocks. Fig. 2 represents a side elevationof the same.

Letters a. b c d E F G H I J show single blocks tted together in one v`form, forming part of the whole. Letters ma o p s in Fig.v 3 represent the indentations in blocks of a diii'e'rent form, and show also the manner of put ting them together. Letter P represents a front view of the blocks, put together in the form of a windmill. s represents a side View of the same, letter m being an end view ofthe lblock lettered ator.

CHARLES M. CRANDALL. Witnesses:

E. H. BATES, WM. H. BATES. 

